Mathematics - 22 July 2007

(-5-2i)^2
simplify . write answer in the form a+bi

need some help here thanks

2007-07-22 12:08:46 · 5 answers · asked by jesis332 1

How do I change the following equations into y= form so I can graph them!

1. 3x-2y=6

2. 4x=3y-9

Please explain how you did it, thanks!

2007-07-22 12:07:50 · 3 answers · asked by John B 1

2007-07-22 12:06:47 · 15 answers · asked by Travell B 1

Evaluate y= (1/2)[ (2x^3)/(3) + 4x^2 + 8x ] @ x= 3
I keep getting the answer 39, but the book answer is 78, anyone know why?

2007-07-22 11:59:04 · 4 answers · asked by superman 4

their product is diminished by 4. If the first is diminished by 1 and the second is increased by 2, their product is increased by 16. Find the numbers.

2007-07-22 11:56:53 · 5 answers · asked by CPUcate 6

for example:

f(x) = x^3 + 2x^2 - 5x + 1

there is one local maximun and one local minimun. How do you find them without using a graphing calculator?

2007-07-22 11:54:34 · 8 answers · asked by Anonymous

I know the answer is 6 -square root of 5 but I don't know how it was worked... Please help!!!

2007-07-22 11:51:58 · 4 answers · asked by Stacy806 1

Hi all i wanna say thank u all for myn answers on myn last topic. But iam a bit confused now

This is now easy for me u start by *2
x+y=5
2x+3y=13

and than with *-1 etc......

White this
5x - 6y = 45
3x + 8y = -31
i had some prob in the beginning but

4(5x - 6y = 45)
3(3x + 8y = -31)

20x - 24y = 180
9x + 24y = -93
.......i know the answer now x=3 y=-5

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I cant solve this prob

y=2x+4
y=0.5x-2

Normally u start by * a number in this case i will choose 2* and -1 when i do that and continuing that calculation i will get a weird wrong answer i try d almost everything but cant find any logical answer its so confusing



Its the same with this
y=x^2+3x-4
y=x-1

I cant find anything!!
Can some1 plzz help me!!
Can u also explain it and give me some detail plzz

Thank u very much!!!!!!!!!!!!
when i

2007-07-22 11:45:39 · 2 answers · asked by playerr 3

2007-07-22 11:36:12 · 5 answers · asked by mathstudent 2

7 squared 32m^2 + squared50m^2 -squared18m^2

2007-07-22 11:32:48 · 4 answers · asked by Anonymous

In bridge, the 52 cards of a standard deck are dealt to four players. How many different ways are there to deal bridge hands to four players?

2007-07-22 11:28:54 · 4 answers · asked by TCM 3

–8x + 8 + 10x = 2x + 1

2007-07-22 11:12:24 · 9 answers · asked by Anonymous

2007-07-22 10:45:07 · 9 answers · asked by Jack M 1

-1/3 divide by -2/5


dividing fractions

2007-07-22 10:40:42 · 9 answers · asked by Pretty 1

2007-07-22 10:24:02 · 9 answers · asked by Jack M 1

find a polynomial equation with integer coefficients for the set of coplanar points described.

Problem: each point is equidistant from the point (2,5) and the line x= -3.

2007-07-22 10:08:41 · 3 answers · asked by treehugger 1

1. simplify. 5 qt 9 pt

2. A baseball team wins 11 of its 25 games with no ties. Write the ratio of wins to losses.

3. Determine whether the pair of fractions is proportional: 4/11=12/33



Please, I'm unsure of them...

2007-07-22 10:01:24 · 5 answers · asked by Brekn'dwn 1

2007-07-22 09:57:39 · 6 answers · asked by Jack M 1

http://i181.photobucket.com/albums/x85/ctti_3/untitled-33.jpg

2007-07-22 09:48:32 · 2 answers · asked by chimstr 1

solve the system by substitution

2007-07-22 09:46:53 · 11 answers · asked by LASHANDA F 1

Ok can someone help becaue i am not getting this. I think my problems use distributive property and the subtraction, addition, division or multiplication property as well..
i dont know how to solve them so lease help me

one of my problems is 3x+2(x-1)=8

another is 6(2-r)=-18

2007-07-22 09:36:42 · 7 answers · asked by Anonymous

Please solve all three if possible but if not try to solve one or two
how do u solve the followings:
1) the square root of "a" squared + 2a - 10 = a
2) square root of "b" squared - 7b + 6 = b - 4
3)square root of 3y squared + 5y + 6 = y +3

2007-07-22 09:31:17 · 8 answers · asked by What 5

Factor the trinomial by grouping.
12x^2 + 25x + 12

(12x + 4)(x + 3)
(3x + 4)(4x + 3)
(3x - 4)(4x - 3)
prime

2007-07-22 09:31:02 · 2 answers · asked by Anonymous

Thank you in advance! I am completely lost when it comes to equations!

2007-07-22 09:29:47 · 9 answers · asked by earthgirl 2

This is very impressive equation however it should be improved therefore I plan on to enhance the equation. Can you help me?

2007-07-22 09:26:05 · 1 answers · asked by THINKER 1

2007-07-22 09:18:38 · 4 answers · asked by Megan07 1

2007-07-22 09:14:55 · 4 answers · asked by earthgirl 2

Which of the following is the most reasonable compatible number to round to when dividing 37.512 by 8?

2007-07-22 08:57:43 · 5 answers · asked by Anonymous

Decide if the situation requires an exact or estimated answer and explain your reasoning.
You are asked to determine the correct amount of liquid medicine to give to a sick baby panda if the directions say to give an amount based on the animal’s weight.

2007-07-22 08:56:54 · 5 answers · asked by Anonymous

Hi all. I set up a little pool for my kids today. It's a round pool, 12-foot diameter by 3-foot deep. The chlorine instructs dosage by gallon, however.
What is the formula to calculate the size of the pool into gallons?
Much appreciated!

2007-07-22 08:52:12 · 5 answers · asked by Richard 1